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recommended customer set detection rule in the center of the scene, or not near
the scene’s edge.
6) Rule position
Although DeepinMind NVR is able to filter false alarms created by leaves, animals
etc, it is highly recommended to set rule in a static field/ object. One customer set
line crossing rule on grass in scene below, grass continuously makes false alarms
which occupy NVR smart resource and storage space.
7) Focal length
If the focal length is too small, the target will be too small to detect as shown in the
following figure, which may cause the missed detection. So we need to select the
proper focal length to avoid missed detection according to the scene.
(5) Standard scenario